Oral sleep appliance



FIG. 1 is a top, front, left side perspective view of an oral sleep appliance showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a right side elevation thereof with the left side being a mirror image;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a cross-section view taken in the direction of line 7-7 of FIG. 2, shown at an enlarged scale;

FIG. 8 is a cross-section view taken in the direction of line 8-8 of FIG. 2, shown at an enlarged scale;

FIG. 9 is a cross-section view taken in the direction of line 9-9 of FIG. 2, shown at an enlarged scale;

FIG. 10 is a right side elevation view of a first alternative position; and,

FIG. 11 is a right side elevation view of a second alternative position. 

CLAIM The ornamental design for an oral sleep appliance, as shown and described. 